plutonic
adjective
plu·ton·ic
plü-ˈtä-nik 
1
: formed by solidification of magma deep within the earth and crystalline throughout
plutonic rock
2
often capitalized
: plutonian
Examples of plutonic in a Sentence
Recent Examples on the Web
Gravestones can be made from plutonic rocks (after Pluto, the earlier name for Hades), like gabbro and granite; metamorphic rocks, like slate and marble; and sedimentary rocks, like sandstone and limestone.
—
David Bressan, Forbes, 31 Oct. 2024
Simon O’Neill unleashed a gleaming, live-steel tenor, and Franz-Josef Selig’s plutonic bass made for an imposing Hunding.
—Globe Staff, BostonGlobe.com, 29 July 2019
Evolution of an upper crustal plutonic-volcanic plumbing system: Insights from high-precision U-Pb zircon geochronology of the intracaldera tuff and intrusions in Silver Creek caldera, Arizona, USA by T. Zhang and others.
—Erik Klemetti, Discover Magazine, 11 Dec. 2010
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
David Bressan, Forbes, 31 Oct. 2024
Simon O’Neill unleashed a gleaming, live-steel tenor, and Franz-Josef Selig’s plutonic bass made for an imposing Hunding.
—Globe Staff, BostonGlobe.com, 29 July 2019
Evolution of an upper crustal plutonic-volcanic plumbing system: Insights from high-precision U-Pb zircon geochronology of the intracaldera tuff and intrusions in Silver Creek caldera, Arizona, USA by T. Zhang and others.
—Erik Klemetti, Discover Magazine, 11 Dec. 2010
Cite this Entry
“Plutonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plutonic. Accessed 9 Sep. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share